There you go!. Its an almost exact fit!BTW... the one in my pic is a new tach that I had in a box thst I picked up about 5 years ago.I. Just happened to be in the garage and bumped into the box..i opened it to see what was in it.The monza dash was in line of sight and by eye it looked like it might fit.So i pulled the clock place holder amd tries to fit the tach. On first attempt it looked like i was going to need to make some slight.mods. on second attrmpt i was able to pesuade the tach to fit. No.mods needed.Almost an exact fit! The hold donw screw holes are off by sbout 20 degs and aligment tabs are out about 1/8 onch each. A little work with the dremel orva file, drill two new holes for tge sheetmetal screws and it will fit like it was made for the dash!

.-----------------------------------------------WA. state, 1 mile south of the Canadian border,I am not at the end of the world, but you can see it from here.'66 Monza Coupe - 4spd, 140 Daily driver beater'67 Monza Vert. - PG, 140 Daily driver beater

It does say V8 and is for V8. Not really destined for anything at the moment. I have a varied car history and have been flipping parts for over 30 years. When I'm at a swapmeet and I see a deal.... sometimes i just cant pass up.

That SUN Tachometer that Dan (1966-GT...) posted is probably the best looking, matching so that it doesn't stick out like a sore thumb. It matches percfectly and yet looks and functions better than any 1960's era TACH, .... and it looks better than any OEM domestic make tachmometer of the sixties era .

It does appear that Dan did black out the SunPro name from the face so that it does integrate so perfectly.

Perhaps Dan will share his trick for just how to open the housing and his method to black-out the white SunPro script from its face. Black permanent SHARPIE marker , perhaps??Since Dan's Sun Tachometer integration into the LATE MODEL MONZA gauge cluster does appear to be perhaps the best candidate and certainly there are none that look better than Dan's conversion..........................perhaps Dan can provide the Sun part # for the specific tach and the black-out method???

People, this is the way to proceed. You don't want the unreliable trash-technology tachometers like the oem unit on the CORSA gauge cluster. Yes, the CORSA dash has a great overall look, even though gauge accuracy for most all the gauges is extremely poor...........it was after all a low priced SIXTIES ERA, stock American mass production automobile. The OEM tach might be as relatively accurate, or maybe slightly more so than the OEM speedometer's accuracy but the durability/lifespan of the OEM Tach of that era is very short when compared to the oem speedo or oem gas gauge. Quality was very low on OEM Corvair (GM) tachs as seen in 1965 compared to even the most inexpensive Taiwan/China aftermarket tachs of the past thirty years! Inexpensive 1985 and up, no-name stuff is highly reliable and accurate where pre-1970 original OEM American car (GM/FORD/CHRYS/AMC) is not. It simply is a matter of the way such tach were designed and built in the SIXTIES compared to the best aftermkt tachs of the Seventies which by 1985 or so that all the no-name knockoffs had copied and mastered such that from a functionality-accuracy standpoint that there was little difference. THOUGH THERE IS REALLY NO DIFFERENCE TODAY WITH RESPECT TO THE FUNCTIONALITY OF AFTERMARKET TACHS-----------I believe that one should give it a great deal of thought when CHOOSING the TACH, as unless you wish to have the appearance of junkmobile, you should BUY the TACH based on how well it MATCHES with your existing GAUGE set...........now if your car is a junkyard dog-Rust bucket with a matching RACOON chewed/scratched interior, any $7.99 free shipping tachmometer from a Chinese Ebay source will be fine, but if you're gonna do it where it matches nicely.......heck give it some serious thought and FIND SOMETHING THAT matches/integrates nicely.....even if that costs $23.99 free shipping from China or even oh my gosh $99 plus sales tax from Pep Boys.Just saying, don't be such a cheapskate that you'd stick any sore thumb looking thing in there that doesn't match just to save three dollars. You wouldn't touch up your DANUBE BLUE colored 1965 Corvair with $0.99 FRED's Black Spray Paint or $1.29 WALMART/Family Dollar Black Spray paint, JUST BECAUSE IT IS INEXPENSIVE PAINT. Being the "smart" but frugal Corvair cheapskate, you would look at least at the inexpensive nail polish section that your wife told you about at Walmart/Target that might have a color that more exactly matches Danube Blue....even if that costs $4 because your idiot way of spraying the black spray paint onto an aluminum pie plate and then borrowing the ten cent artist paint brush from your grand-daughter's paint by number's set to touch up the knicks and chips, etc. JUST LIKE YOU WILL WANT SOMETHING THAT CLOSELY MATCHES WHEN DOING TOUCH-UPs, etc, YOU WILL WANT TO select a tachometer THAT LOOKS LIKE IT BELONGS WITH YOUR OTHER GAUGES!Just saying: DON'T BE TOO CHEAP!!!Be tidy with your wiring and take the time to do it right with quality wiring, and not with some dried up/hard, four hundred year old scavenged wiring removed from a 1958 Sears Kenmore washing machine.

------------------------------------------------------------------YOU CANNOT DO IT ANY BETTER THAN THE WAY DON DID HIS TACH INSTALLATION!--------------------------------------------------------------------------

I don't know who DON is, but Dan's tach looks pretty good for an aftermarket set-up.

I have one I picked up after a thread was done on installing a Sun Tach.I just need to acquire one of those proverbial . . .Round Tuits!

.-----------------------------------------------WA. state, 1 mile south of the Canadian border,I am not at the end of the world, but you can see it from here.'66 Monza Coupe - 4spd, 140 Daily driver beater'67 Monza Vert. - PG, 140 Daily driver beater

To each his own. I like a stock look and something you dont all the time. A kind of GM coulda.Like I said, i just happened to have the tach and eye balled it and thought i would give it a try.My background is Camaro, Chevelle GM A body so a $100 for a tach is no sticker shock to me for a look im going for.

I ve been eyeing a Chevelle Knee Knocker tach for a possible install in my R/S. Many people go with the Spyder dash. It fairly easy retro fit, but i wan some thing different. Plus gagues. One day ill sit down and figure it out. Dont want to cut holes in dash.

Sorry Marco, I did not mean for that to come across as a Dis.I do like your set-up!It does look more "original" than the Sun Tach, it is just a bummer that it is a V8 tach.Can they be re-calibrated somehow?

.-----------------------------------------------WA. state, 1 mile south of the Canadian border,I am not at the end of the world, but you can see it from here.'66 Monza Coupe - 4spd, 140 Daily driver beater'67 Monza Vert. - PG, 140 Daily driver beater

Under the white sticky, is likely access to a potentiometer which can allow you some discretion in adjusting the tach sweep. You may be able to approximate the 6-cylinder sweep. Many Crown builders did the same to their 6-cylinder Corsa Tachs. You are not instrumenting a dyno here.